Lamp-making machine.



N. MARSHALL.

LAMP MAKING MACHINE.

APPLIOATIQN FILED D30. 2a, 1908.

1,1 32,277. Patented Mar. 16, 1915.

7 SHEETS-SHEET 1.

WJTNESSES: INSZE'N TUE LJLA-k 57m, :BYWEHSHALL. W A

N. MARSHALL.

LAMP MAKING MACHINE.

APPLICATION FILED DEC. 28, 190B.

Patented Mar. 16, 1915.

7 SHEETSSHEET 2.

E I 34- 4o mulr ql m IIIIII'IIIIIIIF umw'" 81 IIIIIIMIIIIIIIIIIIEiilll1" unn- \XSEmh. WM 5 WITNESSES.

'N. MARSHALL. LAMP MAKING MACHINE.

APPLICATION FILED DEC. 28, 1908.

Patented Mar. 16, 1915.

'1 SHEETS-SHEET 3.

LESQQTK 1, 1 Hg. 5 1. N1

. IIIIVl/l/l/l V AI WW 1" 1 I g a v 1 E 7 i J2 la 57 fig. 7

(I 84- (,0 I/YZTJVESEZS/I s 83 (a .[NVENTUH m \k 87 8| NURMAN MARSHALL.

Q 6 MW 82 W ATTY N. MARSHALL.

LAMP MAKING MACHINE.

APPLICATION FILED DEC. 28, 1908 Patented Mar. 16, 1915.

191329277 '1 sums-sum 4 Fig. 9

P i .=;J

mam-553s. 1h 1 flvYL'NTaR NORMAN MARSHALL.

m\wm. P I

N. MARSHALL. LAMP MAKING MACHINE.

APPLICATION FILED DEC. 28, 190B Patented Mar. 16, 1915.

fig. i 2.

I c o I o e l (J 9 ILfiTAZE'SSES: ZNL E'NTUR m xk m [Jun/MAN ZI/IABSMLLN. MARSHALL. LAMP MAKING MAGHINE.

1 APPLICATION FILED DEG.28, 190s. Patented Mar 16 1915- 9 9 1SHEETSSHEET a.

Fig. I3

WITNESSES.- JNSZENTDB C Nuamzsz JHARSHZLZZL. m 1% m N. MARSHALL.

LAMP MAKING MACHINE.

.' 7 APPLICATION FILED DEC. 28, 1908.

1 1 8.2,??? Patented Mar. 16, 1915.

v 7 SHEETS-SHEET 7.

v xmaum WZ'TJSEISEESI JNYENTBH and more especially for use in themanufac- UNITED STATES PATENT OFFICE,

NORMAN MAR HALL,

To all whom it may concern:

' Be it known that I, NORMAN MARSHALL, a citizen of the United States,residing at Newton, county of Middlesex, State v of i 5 Massachusetts,have invented certain new and useful Improvements in Lamp-MakingMachines, of which the following is a specification. v

The invention relates to apparatus for use in the manufacture ofincandescent lamps,

ture of the stems'whichcarry the leading- *in wiresand the attachedfilament or filaments,

Heretofore in the manufacture of incandescent lamps it has been thecommon practice to secure the filament ends to the stem wires by manualmanipulation ofthe stems t. and filaments, and the unequal spacing and a20 positioning of the stem wires in the stems as heretofore formedhasrequired that the ends of the-filaments be secured to the stem,

wires successively. It has been proposedto facilitate the; operationsincident to securj ing the filament ends to the stem wires by utilizingapparatus embodying jigs or hold ers for positioning the stem wires andfilament ends, and to perform certain .of these operationsautomatically. The positioning devices'of such apparatus have usuallybeen constructed to position a single filament end and stem wire, and ithas therefore been proposed to increase the efficiency of such apparatusby providing means for simultament ends to the differentstem wires, butthe employment ofsuch devices required neously positioning and securingthe filaei'ther the repeated adjustment of the positioning devices tosuit the varying positions 40 of the stem Wires in successive stems, orthe sorting of the stems, either of which operations caused a loss oftime with a resulting reduction in the eficiency of the apparatus.

In accordance with one of the features of the present invention, thestem wires are accurately positioned and maintained in definite relationto each other during the closing of the end of the stem about the Wiresso that the stem wires in difi'ereht' stems are uniformly spaced and,are also positioned to pro ect a uniform distance beyond the end of thestein. This feature may OF NEWTON, MASSACHUSETTS, ASSIGNOR-TO GENERALCOMPANY,.A CORPORATION OF NEW. YORK.

iii-memo mmnmaxme macnma.

Specification of'Letters Patent. P t t 1 1915 Application filed nectar28,1908. Seria1No.469,6 50.

" form spacing andtpositioning of the stem 7 wires enables the use ofdevices by which the ends of the filament or filaments may be ,rapidlyand convenientlybrought 'into proper relation to the stem wires to whichthey are to be secured, and the simultaneously securing, ofrthe filamentends-and stem wires together. ,This uniform spacing and positioning ofthe wires therefore enables devices to be used in securingthe filamentends to the stem rwires by which a material reduction in the time andconsequently a reduction in thecost of manufacture may be effected. i

A further feature of the invention contemplates the use in connectionwith the devices for forming the stems and positioning the stem wires,of devices for holding :aifilament or filaments, as the case may be,with the filament ends positioned in a manner correspondin wires andbringing the filaments into position with theends close tothe stem wiresso that the filaments maybe readily united with the stem wires. 1

to the positionsof the stem- A further feature of the invention con:templates the provision of means for auto-v H matically supplying cementto the filament ends and stem wires after they'have been brought intoproper relation to each other in the manner above referred to.

In an apparatus embodying all the features above referred to, the glasstubes. from which the stems are formed are introduced Into the machine,the stem wires; are intro duced intothe wire positioning devices, theends of the glass tubes are fused and molded about the stem wires,theposition of the,

stem wires being accurately maintained dur ing the sealing'of the end ofthetube, the

filament or filaments are introduced into. the

filament holding devices, the filament ends and stem wires arejbroughtinto close relation, the cement is applied to the wires and filamentsand allowed to dry, and then the roe completed stem with the filament orfila; Y

meats secured to the stem wires is removed ready for the insertion ofanother glass tube, By combining the devices for form ingthe-stems.andpositioning the stem wires with devices for carrying thefilaments; and with devices for applying cement, the operations incidentto the manufacture of the.

invention in an apparatus whiph will enable the required operations tobe rapidly and' conveniently performed, I have employed various otherfeatures of invention, which,

while they are not essential to the broad features, are ofimportance incontributing to the efiiciency of-the machine. t

The various features of the invention will be understood from aninspection of the accompanying drawings and the following detaileddescription of the apparatus shown therein. 7 In these drawings theillus4 tration of many of the operating devices for giving the requiredmovements to various parts of the apparatus are to a large extentdiagrammatic, no attempt having been made to show the specific detailsof such operating devices.

In the drawings, Figure -1 is a diagrammatic plan view showing anapparatus em-- bodying the various features of the invention; Fig. 2,isan elevation of one'of the heads which carry the devices whichcooperatein forming the stemsand cementing the filaments to the stemwires; Fig. 3 is a diagrammatic plan view showing certain parts carriedby the head; Fig. 4 is a plan view of the head showingthe tube carryingjaws; F ig; v5 is a detailed sectional view on line .'5.5 of F ig. 4Fig. 6 is a detail plan view of the'wire positioning and holdingdevices; Fig. 7 is a detailselevation of the same, partly in section;Fig. 8 is a view similar" to Fig. 3 on anenlarged scale andshowing'certain of the parts in a different position; Fig. 9 is a detailelevation, partly ii -section, showing the parts in the position'indicated in Fig. 8; F igs .-10,.11 and .12 are detailsshowing theconstruction of the filament carrying devices; Figs. 13, Hand 15 aredetail views showing the construction of the cement laying devices;Figs. 16, 17 and.

18 are detailvicws showing the construction of the devices for rotatingand starting and stopping the heads shown in Fig. 2; Fig. 19 is a Viewshowing a lamp with one form of stem which may be made on this'machine,and Fig. 20 is a-detail view showing the leading-in wires in position inthe stem.

In the apparatus illustrated in the drawings thereis a circularlyarranged series of heads mounted upon arotary carrier which isintermittently revolved to bring each head to the stem wires areperformed. The, carrier for carrying the heads consists of a central.hub- 1 secured upon the upper end of a shaft 2 and provided witha'series of radi- .-ally extending arms 3uponthe outer ends of which theheads are mounted. As shown,- there are ten arms and theheads arebrought successively into ten different positions by the intermittentclockwise rotation ofthe carrier, the'carrier remaining at rest for aninterval oftlme between each partlalrevolun I mtermittent drivingmechanism connected with the shaft 2 through. the gear.4 indicatedi'nFigil6.

an upper plate 6 and two pillars 7 and 8. This head is secured upon theupper .end of a shaft 9 mounted in a bearing 10 at the end of one of thearms 3 of the carrier, and the head is rotated atsuitable intervalsandits rotation arrested with the parts in a fixed position at the requiredtime by anysuitable I -me chanism, such as that indicated in Figs.

16 to'18. As here shown, a. series of pulleys- 11 are'fdrmed on a sleeve12 which is loosely mountcdonthe' shaft 2 and is-continuously drive-n ba belt 13. Each of the head carrying sha ts 9 has loosely mounted uponits lower end a series of pulleys 14, which are provided on each headcarrying shaft merely.

for convenience in manufacturing and set-, ting up the machines, andeach head is connected with one of the driving pulleys 11 b'y abelt 15passing over one o .t 14 and a corresponding pulley '11.

The sleeve on which the pulleys 14' are formed has secured to its upperend a e pulleys 1 05 ratchet'wheel '16 which is adapted to be engaged bya pawl. 17 pivoted at 18 on an arm 19 which is secured toQthefheadcarrying shaft 9, the pawl 17'being swung into engagement with theratchet-wheelxltiiby a spring 20. 'W hen the'pawl is-in engagement withthe ratchet wheel the head carrying shaft 9 is continuously rotated,'butwhen the pawl 17 is disengaged from the ratehet wheelthe pulley 14 andratchet wheel rotate idly upon the head carrying shaft; which re mainsat rest until the pawl 17 is again en gaged with the ratchet wheel. Forthe purpose of disengaging the pawl from the ratchet wheel and arrestingthe rotation of. the head carrying shaft ,withthe shaft inaa definiteposition, a stop arm 21 is provided. This stop arm is pivoted at 22,upona boss formed on the bearing 10 and is providedwith a downwardlyprojecting .finger .24

adapted to be moved into and out of the path of the pawl 17 and pawlcarrying arm ,tion. The intermittent rotation of the carrier maybeeffected through any suitable.v

. s5, Each head comprises a base .plate or bar. 5,

. path of the pawl carrying arm 19 and out -carrier and the pawl 17 ishel gagement with the ratchet wheel 16. -lVhen the head carryingshaft'is tobe rotated a against the tension of the spring 20 by theengagement of its front face 26 with the finger 24. The head on the headcarrying Shaft. is thus held infixed position on the out of enpin 27which projec s lateral-1y from the stop arm 21 rides up the inclined endof a starting cam 28, thus liftingthe arm 21 thatthe stop finger 24 ismoved out of the of engagement-with the front side of the pawl. When thestop arm is thus raised it is .held in raised position by a pivotedlatch,

29 which engages a projection 30 onfthe arm. lVh'en the stop. arm israised the pawl 17 immediately engages the ratchet wheel l6and the pawlcarrying arm and head carrying shaft are driven from the ratchet wheel16. lVhen the rotation of the head carrying shaft is to be arrested apin 31 which projects laterally from the latch 29 rides up the inclinedend of a-stopping cam 32 so'that the'stop arm 21 is allowed to fall intothe full line osition indicated in Fig. 17. Now whent e pawl carryingarm 19 comes around; the front face of the pawl 17 strikes the arm 24 sothat the pawl is disengaged from the ratchet wheel and'the arm 19 bringsup against the stop finger 24 so that the rotation of the head carryingshaft is arrested. As the arm 19 comes againstthe fin er 24 it ridesunder the la-tch25 whiclr yields to allow it to pass and then advancesinto position backof the arm so that the arm is locked in fixed positionbetween the latch and finger 24. In Fig. 17 the cams 32 and 28-are shownone above the other, but it will'be understood that this illustration isdiagrammatic, and that these camsare arranged at proper intervals tosecure the starting and stopping of the'head carrying'shafts at thepoints. in the operation of the maf desired chine. v 1.

The glass tube from which, the stem is formed is introduced into themachine either automatically or b hand when the head is in positionmarke No. '1 in Fig. land is not rotating. The tube is introduced be-]tween the tube holding paws-33 which are mounted above the upper plate 6of the,

head (Figs. 2, 4 and 5). Theadjacent ends of these aws are recessed toproperly embrace and grasp the tube and the jaws are i I mounted toslide in guide grooves formed in'the-upper face 'of the plate 6. Thejaws are opened and closed by means of a cam disk 34 mounted to rotatein a semicircular groove35 formed in the edge of a plate 36- which issecured to the upper endsof the '1 rods 7 and 8 and forms-in effectapart of the upper plate of.the head. T he cam disk '34 isprovided withtwo eccentric slots 37 which are engaged by pins 38 projecting upwardfrom the gripping ,jaw 33. 'lhe cam plate is rotated to open and closethe jaws by means of a lever 39 mounted upon the rod 7 and connectedwith the cam disk by a link 40.- The lever 39 is supported upon a spring41 which surrounds the rod 7 and tends to swing the lever into positionto close the gripping jaws 33. The free end of the lever is/provide'dwith'a roll 42. A fixed cam 43 is arranged in'the path of.the roll 42andoperates to swing the lever into the position indicated at No. 1 in Fig.1 and open the jaws 33.

\Vhen the stem tube is inserted between the jaws. 33 it extends downthrough an opening 44 in the upper plate 6 of the head,

and the lower end-of the tube rests upon a plate 45 at the upper end ofa post 46,

which .is carried on an arm 47 projecting from a hub 48 loosely mountedon the rod 8.

As the head travels from the'posi'tion Ho. 1 to the position No. 2, Fig.1, the roll 42 at the end of the clamp operating lever 39 rides offof-the cam 43 so that the clamping jaws 33 are clo ed and grip the stemtube. r During this travel of.the head the stop arm "21 is lifted byoneof the startingicams 28 so that the driving mechanism for the head isthrown into operation and the head as it comes'into the position No.-2yis being rotated. While the'head is in the-position No.

2 the upper end of the glass tube is acted upon by a series of blow pipeflames, the burners for which are indicated-at 49, and

the glass at.t-he upper end of the tube is heated. \Vhen the'head isbrought into the position No. 3 it is still rotating, and the upper endof the-glass. tube is acted upon by a second series of blow pipe flames,the burners'for which are indicated at 50. By the action of theseblowpipe flames the glass is reduced to a plastic state sothat its upperend'may be molded or spun out to form the bell 'mouth at its upper endby means of the tool indicated at 51 in Fig. 2. This tool is providedwith a'central conical surface for,

spreading the upper end of the tube outical surface whichwill vactagainst the outeredge of the flared end of the .stem'. and thus ward andis provided with a downwardly projecting flange 52 at the base of thecon-f 125 insure the uniform shaping of the fiare'd end ofthe' stem. Theshaping tool 51 is mounted upon'an arm 53 which is pivotedat'54 and 183operating mechanism.

iii-

be operated through a 5 by means of a treadle or by means of a spitahl yt med As the head travels from position No. 3to

'position'N'o. 4, the latch 29 rides'overone of p the stopping cams 32so that the rotation of I I th'e liead'is' arrested andthe head islocked in'fixed' position. While the head: is in the pos'ition'No. 4 thestem wires are. introduced.

; In the construction of apparatus shown it is intended that thesewires-should be introduced manually by an operator in the manner inwhich they are commonly introduced ends of the leading-in wires and.theother i being a wire ,for connecting the ends of two filaments, theother endsof which are conmoved to the leading-in wires. 'The devicesfor. positioning and maintaining the stem 2 wires in definite relationare therefore onstructed; and. arral'iged to 1 actiipon three vinmanufacturing stems tobe in lamps iri'w hich a single filament issecured to the leading -in wires and in which an anchor WIIO isconnected to the center part of thefilament, the wire positioningdevices will be modified to suit the differentconditions.

. In the construction shown the-ends of the 35 leading-in; wires whichare introduced'iiito the stem tube are'insertedin small positioningholes 56 formed in the plate and pref erably slightly bell-mouthed tofacilitate the introduction of the wires (Figs; 6 and 7).

40 The post- 46 is made hollow. to receive a cylindrical block 57, whichis held yieldingly. against the under surface of theplate .45 by aspring58 interposed between the block and a plug 59screwed into the end of 5the post. A tubular screw 60 with a longitudinal opening 61, through ithasits upper I f end threaded into the block 57 and passes loosely downthrough the; plug 59 and through; an arm 62 promoting. from a sobrackct63 carried by. a collar 64 which is "mounted onthe rod 8. The head of.the e screw 60 is arranged to engagethearm 62 and arrest theupwardmovement of the block 57 when the post 46 is moved upward, as 55hereinafter explained. v

The center stem wire is introduced into the middle positioning hole 56by means of a rod63- mounted in a support or arm 66 on the bracket 63and inline with the hole 61 5.0 which extends up through the screw 60.and ehlock 57. The upperend otthe rod is I recessed to receive awii'e'which is placed by 1 tllflOPOI'fltOldIl the holderfil with thelower end of the wire in a recess in the end of the 65 rod 65. Theoperator then slides the rod upinposition in the'liolder and with itslower endon the .plate 45 as shown in Fig. 20am tion to each other a'd-project into-the slot lever is swung intoits upper position the wardthrough the screw 60 and the block 57 untilitis arrested nearthe upperend of the hole in the black 57 The wire then pro3ects through thepositioning hole 56 in the plate f 45 and-into the lower end ofthe stemtube the proper distance; I

The positioning holes 56 for *the stem wiresextend through the plate 45and registeiwith a shallow slot'67 formed in'the upper end ofthe block57 One side of this slot 67 is formed by the laterally pro e'ct ng 1ends 68of a series of leaf or gripper springs 69 which are, securedwithixifarecess 7Q in the. block 57. The 'operatonplaces the stem thenplaces the two outer leading-in wires in position. with their lower endse'xtending through .theholders 56 andinto' the slot 67,-

while the middle wire is hroughtinto proper 3 5 position bymeans of the.rod 65. as above de-. scribed; Thelower ends-of the wires are thereforeallprope'rly distributed with rela 67 where they are rmly held bythefixed on -side of the slot 6.7 and the ends 68 of the leaf wires Itwill be understood, of course,' that p endsof the wires and holdingthein so that;

springs which form clamps for grifipiiig the r they will project a'fixed distance below the up or surface ofthe plate 45. v

he leaf springs 69are forced forward to grip the endsof the wires andare allowed to spring -back so asto release the ends ofithe wires at.the pro er times by a cam: or gripper operating ever 71 which is pivoted1 0 at 7 2' in thezblock 57 and projects outward through an o ping inthe wall of theihollow post 46. he inner endof the cam lever as soshaped thatiwhen the outer. end of the .springs'69 will be' operatedtoclamp the ends of the stein wires, and whenits-outer- .en'd isswung'into its lowest osition the leaf springs will he released an allowed to1 spring back so as to free thefend-s of the steinwires.

The device indicated\ fora swinging the gripper operating lever 71consists ofacam plate 73 loosely mounted on the standard 8 f andprovided witlufour radially-extendingarms. The outer ends of these armsare providedwith inclined cam surfaces 74 and" 7 5,, the cam surfaces 74bein .formed on the arms which are diametricalyop'posite each other, andthe cam surfaces 7 5' being formed on the other two diamerticallyopposite arms. The plate 73 stands. normally in the position indicatedin Figs. 3 and 8., ill which position noneof'the cam surfaces-on theplate register with the gripper operating lever 71. When the gripperoperating lever is to be swung aboutits pivot to either 0perate orrelease. thegrip'per, the plate73'is given aquarter revolution inthedirection of the arrow, Fig. Assuming that the 55 i i fused. lass at theend of the stem'tubeis- .i ns'ure by causing the plate 45 in which theouter end of the leveris in its lower position, as indicated in Fig. 7,one of the cam surfaces'74 will ride 'under the end of the lever,lifting theouter end of the lever to its upperposition and then passfrom below the end of the lever; \Vhen the ,plate73 is given anotherquarter revolution, one of the cam surfaces 75 will ride over the outerend of the gripper operatinglever, swinging .it

downward into the position; Indicated in Fig. 7 and thus releasing thegripper. The plate 73 is stopped in the position into-which it isrotated by being held infriotional en gagement with the upper end of-the hub 48 by a spring 76 surrounding the rod 8 and interposed betweenthe upper surface of the plate and the under surface of the upperhead-plate-6. The plate 73 is rotated, at. P

proper intervals during the travel ,of the head from position toposition by pins 77 which project upwardly from .the arms of theplateand engage with fixed cams or abutments 78 indicated in Fig. 1.

. the position No. 4 110 position No. 5.

After the wires have been inserted the positiomng holes 56 the headtravels from During this travel one of the ,pins 7 7 rides against oneof the abutments 7 8, turning the 1 plate 73 through aquarter'revolution. During thismovement of the plate 73 one of the cams74 operates the lever 71 to'efi'ect the gripping of the ends of thewires. Dur- I ing this travel of the head the stop arfn' 21 3 .of theglass tube is fused, and while the endis raised by ,one of the startingcams 28 and the head is set into rotation. 'While thehead-is ii-position No.5, the lower end of the stem tube is acted upon by a'-series of blow pipe flames, the burners for .which are indicated at 79,and a preliminary heat- 'ing of the lower end of the tube is efi'ected.The head then travels from the position No.

5 to position No. 6, the rotation of the head still continuing. Whiletheheadv is in position.No.' 6 the lower end of the stem tube is acted uponby a seriesof blbw pipe flames, the burners for which are indicated at80. By the action of these flames the lower end of the tubeis asemi-"molten state the de- .vices for molding the end of the tubeoperate;

Asthe lower. end of the tube ituses under the action of the blow-pipeflames the molten" glass shrinks orlifts upward. In the .con-

struction of the present machine the accurate spacing and positioning ofthe wires in the wire positioning ho esare .formed to'graduend of thetubi The upward move ment of ally rise and followup the glass as it jupward during the fusing operation, the re- 'sult being. that the "wiresare accuratelyf maintained in position at the pointwhere they emerge.from-the end of the stem,1.and always project the samedistance beyondthe the'plate against the molten end of the tube also results in anaccurate shaping of the end of the tube so that the ends of the stemsare of uniform and even shape. \Vhile the "glass is in theplasticcondition, the sides of the lower endof the-tube are pressedinward to flatten the tube at this point and-insure the.sealing of theend of the tube about the the lower end of an ektension 84 of the hub 48which carries the cylinder 46 anttplate 45. During thefusing of thelower end of the tube one ofthe teeth of the star wheel' 82 strikesagainst, an abutment 85 (Fig. l)

at each revolution of the head so that the star wheel and cam 81;areintermittently r0:

tated to gradually raise the plate 45 asthe fusing progresses. Duringthis n ward movement the head of the screw 60 hy its engagement with thearm 62 holds the block 57 and gripper springs 69"stationary so that theplate 45 slides up the wires. Thus the.

relative positions of the wires at the points where they emerge from thefused glass is maintained and accurately determined, and

the extent to which they project from" the end of the finishedstem isalso accurately determined.

During the time that the head is in position No. 6, it is given such anumber of revolutions that the rotatlon of the star wheel 82brings-thehigh 'part 86 of the cam 8l under the part 87 of the cam surface'83, so

that as the head leaves the position No. 6 the plate 45 is in itshighest'position.

As the head travels away" from the positionNo; 6, the latch 29 of thestopping and starting mechanism rides over one of the stop cams 32, thusstopping the rotation of of the head, and while the plate 45 is stillheld'in its highest position, the devices for pr ated. plates 88secureduponthe ends of. two arms the sides of the stem 2 are, oper-' hesedeYices comprise two presser the; head. Immediately afterfthe stopping-vi .89 which are pivoted to the upper plate 6 I of the head at; thepoints 90, and arecconnectedso that "they operate in. unison by Iintermeshing segmental ars 91 formed on the hubs of the arms; T epresser 'carl'yin arms- 89 are maintained in their retracte position bymeans of'a spring 92 secured to one of the arms andto the plate 6. The

arms are moved inwardagainst the tension of the spring to bring thepresser plates-88 into engagement with the end of-theutube' 3' means ofan-arm 93 projecting from the,

L 3 --After the end of the tube has been thus I a I shaped and moldedthe lower ends of the the outer end of-the clamp-operatin the hi h part86 of the cam from below the part 8 of the cam 8 1 sothat the part ,87'

7 block 57 and clamping -jaws to drop below 0 est position ind1ca tedinFig,9-. This down- I stein.

50 .projecttadiall the travel of t e' head from pos tion No. .6

'hub of one of the arms 89, and carrying at its outer end arch-'94. v

As the head moves from the position No. 6,-and immediately after therotation of the 5 head has been arrested, the" rol l 94 rides 3 againsta cam 95 :(Fig. 1), which moves-the arm'93 in a direction tojswing thearms 89 inward and press the p sser plates against the end of the stemtube.

stem wires are released by the clamp springs 69. .This' unclamping ofthe wires 'is' effected by an abutment 96which is arranged in the pathjof the p'ins 77 on the clamp opera'tih cam plate 73 and operatestoswing said. p 'atethrough a quarter revolution'; '"Durin this movementof the camplate 730116 o the cam surfaces 7 5 acts on lever 71, sringing it into'the osition in icated in Fig. '1, so that the sprln 69may move back to release thevends of t e stem wires. '.-'Immediately"after thevwire gripping de- 5 vices are disengaged from the ends 0v the 1wires one of the teeth on the star wheel 82 v strikes againstanabu'tment 97 turning the star wheel and 0311181 sufficiently to carry'drops oif. of the" high part 86, allowing the their startin ,positlon,shown in Fig 7 and permitting t e plate to return to its low-@- wardmovement oi the plate'45'f17ees' the A stem wires from thepositioningholes 56 in the plate 45 so that the plate may be swunglaterally from under. the, lower end of the Immediately after the ends.of the stem wires have been thus freed from the plate. "45,.and durinthe travel of the head from,

the position 1 o..6 to the'position No. 7, the 45 post :46 on which-the"plate 45 is carried is swung laterally from under'thestem so as toleavetherspace belowthe stem free. The devices for effecting the lateralmovements of the post com use two arms. 98 which rom the hub 48. Duringto position. No. 7,. .one of the armsj9 8 rides the abutment '99, vwhichacts to swing-theermand-huh S about'the' rod 8 ts .gind? to bring thepost] 461 intothe position a in Figs. sand 9:,. in position- "NearerFig. 1.

a w ile the head. aimam position he; if'the' filaments are inser e inthe filam'ent "oo'holding'de'vieesby the operator, and these "devicesareswung into position to bring the filament ends into eng'a' ement with orclose to the projecting en "of the stem j 5, 'I he construct1on"ot thefilament holding cam groove 108 causes the plunger and and carryingdevices'embodied in the apparatus being described is best shown in.Figs. 8' to 12.. As here shownfthe filament holding and carryingdevices areconstruct ed to position and carry two filaments, one end ofeach filament being held in position for attachment to the center'stemwire and the othercnd of each filament'being held devices comprisea plate 100 provided in its :in jpo'siti'on'for attachment, to one of"the front edge with three positioning recesses .101 which aresubstantially V-shapedtfor convenience in introducing the 'filaments-These positioningrecesses 101 are the same distance apart as, the stemwire positioning holes 56 in the plate 45,and therefore the ends of thefilaments which project above the' p'late will be spacedlto correspondstothe spacing ofthe stem wiresf'The devices-for holding the filaments inthe ost;- tioning'recesses 101 consist of clamp fingers mounted Withinrecesses formed in the plate 100.

forced rearwardly by springs and their rear ends project intoa recess106v formed in the plate 100. iEach plunger is provided with a radiallyprojecting pin 107 which 102 formed on the outer ends-off rods 103 i"which are connected with 'plungers 104' 90- These clamp carryingplungers are 9 inactive position the pin 107 'riding in they clampingrod. to be rotated so; as to swing ythexclamping finger-laterally frominfront of the recess 101.- This. enables the-file nentsato be moreconveniently and quickly lntroduced .into' the -positioning recesses.When the plunger is released the spring acts to return thec'lampingIfinger into. clamping rpositifon,'the cam groove 10.8 actingon the pin 107;,to'swing the clamping finger so that it-lies across thepositioning .recess 101. The opening and closing of the clam'pingfingers is effected and controlled by means of a camslide 109'mounted inthe'recess106' and 'heldjtherein by a plate 110. The filamentpositioninga-nd carrying plate 'l00 is formed is provided wi where itmay be'' conveniently o eratedby the operator. and ang'of eris rov ded 11i t m le. 114;. :11

Fig.3, which i s'determined by. the engagement of a pm 115 with a stoppin.'116 on'- the head plate ,6.

N ,i-7, zipper'ator introduces .the' 'aments" the r e en s ecess s 101in" such:

115' upon the end of an arm lll'which ispivoted 'i at '112 totheuplperplate 6 of. the-head and an operhting handle 113'; e The cam slide109 extends-into positio Q brought into engagement with the filaments tohold them in position in the positioning recesses. The operator thenswings the filament carrying lever 1 11 forward into the positionindicated in. Fig. .8; which is'determined by the engagement of thefrontside ofthe arm with the stop pin 116. This brings the filament;ends into close relation with the stem wiresasindica'ted in Fig. 9.;

Whilefthestem-wires and filament ends are held in the position indicatedin Fig. 9,

cement is supplied to the wires and filament ends. The cement supplyingdevices which are embodied in the apparatus being described are bestshown .in Figs; 2, 8,9

and 13 to 15.v As here shown, the vcement which is to be applied to astem wire and the;

adjacent filament end or filament ends is presented to the wire andfilament end in the form of a small globule carried in a sub stantiallyV-shaped recess 118 formed at the mouth ofa tubeor passage 119 through30 which cement is forced ust previous to the application of thecementto the wire and filament end. By thus carrying the cement in asubstantially ,V-shaped recess or recess having converging sides whichforms the mouth of the cement passage, a comparatively-large globule ofcement maybe presented to the wire and filament end, and

may be applied thereto in such manner as to effectively unite them.With-thisconstruction also the globule of cement frees itself from therecess when the cement applying devices are moved away from'thefilamentv end and stemwire, leaving the cement upon.

the wire and filament end so that the recess is substantially free fromcement. The ce-f ment applying device. does not, therefore,v

become clogged so that the cement will not be properly supplied. Thethree cement carrying recesses 118 are formed in the wedge-shaped frontedge 1290f a plate 121. By thus forming the cement carrying ;recesses inawedge-shaped-carrier, the freeing lot the globule of cement from: therecess time during which it may be'operatd with- ;when the carrieris'nioved awayfrom the stem wires and filaments, is facilitated, and jthe reliability of the device and length of out requiring attention, isincreased.

:The cement carrying plate 121 is formed.

on'the end of one arm .122 of theylever which is pivotedat 123 to thehead plate 6.

" The other arm 1240f; the lever projects beyond thehead-carrying .plateand is providedwith anoperating roll 125. through, which movements areimparted to'the leverto carry the cement carrying plate to and V fromthe stem wires and filament ends.

. Cement is supplied to the'cement passages 119 through valves 126 whichcontrol com- .munication between these passages and a supply chamber 127formed in the plate 121.

The supply, of cement under proper pressure is maintained in the supp ychamber 127 through afiexible tube 128, the upper end of which .isconnected with a'tube 129 leading to the chamber 127, and the lower endof which'is connected with thelower end of a reservoir 130 carried onthe head plate 5, as best shown in Fig. 2. 'T he cement within thereservoir 130 is subjected to pressure by means of a piston 131 which isforced down upon the cement by a spring 132. The ten-' sion on thespring may be adjusted by a plug screwed into the upper end of thereservoir, and engaging the upper end of 'the spring 132.

vThe cement supplying valves E6, as

shown in Figs. 13, 14. and15, are held nor mally closed by coiledsprings 134 "which force the'valve operating plates 135 against fixedstops 136. 5 The valve operating plates 135 are secured to the outerends of the valve stems and are provided with inclined surfaces 137arranged to be operated upon by the ends of adjustable screws 138. I Thescrews 138 are carried in a slide 139 which is connected with a plunger140. The. plunger is mounted in a recess in-the plate 121 and is 'heldyieldingly with its endnprojecting beyond the end of the'plate 121 byspring 141.

lVhen the plunger 140 is in its normal position the ends of the screws138 are out of contact with the surfaces'137 on the valveoperatingplates andthe.valves are held: in

pos'itionto cut oil communication between the chambers -127- and thecement passages 119. When the plunger 140" is forced inward the ends ofthe screws 138 act against the valve operatingplatesj and swing thevalves intol'position to open communication between the supplychamber-127"and the cement passages 119. The extent of opening betweenthe chamber and passages-de pends upon the adjustment of the screws,1 38

and ,may be varied to suit the condition under which the machine isoperating. As the head travels from position No. 7

to position No.8 the operating roll for cam 142 (Fig.=1) whichyacts toswing the cement carrying plate 121 toward the stem wii-es and filament"ends and tobring the..." lever 122@into position against a step 143(Eig.' ,8,). Whenfthe' cement carrier is in this position the cementcarrying recesses 125 -'11 8 embrace the filament ends and stem wires,as indicated-in 8'and 9, and, the

globules of cement which have been.forced' out-'into ithese recesses areapplied j to the filament ends and stem wires. Thecement' the cementcarrying device'srides against a carrier is held normally retracted by aspring 144, as indicated in Fig. 3.' As the cement carrier .is movedfromthis position into the position indicated in Fig. 8, the end of theplunger 140 rides against the end of a'cam arm 145 which is pivoted; at146 to the head plate 6, and acts to force the'plungel" in'as the end ofthe plunger passes by the end of the' cam arm, thus allowing. a

6 certain quantityof cement to be forced through. the cement passages119. On the return movement 'of the-ceinent carrierthe,

cam arm 145 ields against 'the tension of. ;the spring, 14;] which holdsit 'yieldingly agai'nsta stop 148 and allows the plunger topassedbcyond' the end-of the cam arm, the

"-cam arm is returned into' position against i the stop 148 ready tooperate the plunger rier toward ;the stem .wires and filament ends.plied to the filament ends and stem wires,-

i be provided for heating. and. drying the ce- ,ment duringthe travel of.the 'head' from position No. 7 to positie n No. 10. As the head comesinto position No; the roll 42 onthe end of-the clamp operating lever 39'ridesagainstthe front end of cam 43, which i swings the leverinto theposition indicated .0

in Fig. 1, thus opening the jaws of the tube-holding clamp so that thefinished stem with the filament cemented to the stem wires.

7 may be removed-preparatory to the'introduction of'afresh stem tubewhen the head comes into the position No. 1. The rod 65 head is in thisposition:

- As the head travels from. position No. 10

' to position No.11, one of the arms 98 on the hub which carries thepost-46 and wire'positioning plate 45 rides against an abutment '150,shown in Fig.1, which cooperates with= the arm in swingingithepost 46and pl t 45. into' position beneath the tube ho ding .55 clamps, the arm47" being brought against 7 [a pos tioning'stop 151,,shown' in ig. '2.The

f star wheel 82 then moves past a seriesof I 4 fingers 152, shown inFig.1 1, which'act to rotate the wheel and earn 81 a suflicient dis-'eotance'to raise the base- 46 and: plate '45into positiohftObe-engaged"bythe end of the stem tube.

7 During this movement of the ost-vthe. block 57 moves therewith and thei ead of the'screw 60is brought against the term 62 as Fig. ;7. Theparts are pass idly-by; As soon as the plunger has on' the next movementof the cement car After the cement has been thus ap-- I theroll 12'5rides'ofi the cam'142 and the.-

is returned to itslo wer positio'n while the now in position readyforthe insertion of another stem tube, and in position for theintroduction of the stem wires for this tube. While in the machine whichhas been 'described it is intended that certain parts shall beinserted'manually, andthat movement of certain of the devicesforhandling the parts to be assembled is effected manually, while'themovement of other of. such devices is 'automatieall effected during theoperation of the machine, it will be understood that so far as thebroader. features of thefinvention are concerned, the manner in whichthe. parts tobea'ssembled are introduced and. the manner in which themove-j ments of thedevices for handling these parts varied as found mostdesirable or economical in adap'tin the particular apparatus in whichthe eatures of the invention are embodied to the conditions under. whichthe ap-' v paratus is to operate. Y

It will also be understood'that the specific construction andarrangement of the various parts isnot essential, except in so far, asthe specific arrangement or construction may be referred to in theclaims.

are eflected, is not material, and may be "\Vhat I claim as new, anddesire to secure by Letters Patentof the United States, is,-

1. In a stem forming machine, the conibination with means for holding'astem tube and meansfor heating one end of said tube,

of a shaping tool for flaring out said tube provided with a surfacediverging from the axis of rotation of the heated tube to a point"outside the Walls-of said tube and a member ,mountedat the'outer end'ofsaid surface to engage and smooth the edge of the flare produced on saidtubeby said surface,- means for movingsaid tool into engagement with theheated end of said tube, and means for simultaneously producing relativerotation;

. of said tube and tool While said tool is in engagement with the heatedend of said tube. i

2. Ina stemiforinin'g machine, the com bination-withastem support forholding a stem tube with. one end projecting from said support, andmeans for heating the projecting end of the tube, of a conical shaping fdiameter dsu stantially? greater than that-of the tube andProvided atthe outer'edge of "the base with a flange for e'ngaging and tooiforflaring out the end of the tube, said conical shapjng toolhavingat thebase a smoothing the flared edge of the stem tube, I

withthe end thereof, and means for simulmea'ns for moving saidtoolflongitudinally .of sa d tube and'into and out of engagement;

- taneously producing relative rotation of said tube and toolwhllesaidtool is in engage ment withthe heated endof said'tube.

3. in a stem forming machine, the'eombmation' with: a movable carrierand a stem around the stem wires. 4

tube, and means for automatically moving ii-alas? mounted to rotate onsaid carrier and arranged to hold the stem tube in val'inefme'nt withits axis of rotation, of means for heating the end of the stemtube, anon-rotatable flaring and shaping tool mounted to-move the stem wiresdur ing the fusing, and means J0 in alinementwith the axis of rotationof the stem"tube, said tool having asurface inclin'edto said. axis toflare outthe tube and extending beyond the walls of said tube, a

shaping member with a surface parallel to said axis and beyond the wallsof the tube to epgage and smcoththe edge of-the tube,

when flared, and means for bringing said non-rotatable tool intoengagement with the heatedend of the rotating stem tube during 4. In astem forming machine, the c0m- 1 bination of a device for preventingdisplacement of the stem wires during the fusing of the tube and thescaling in of saidwires,

' andmeans for causing said device to follow and press upon the endol-the' tube as said tubefuses and the end thereof retreats. I

' 5. In a stem forming machine, the combination with means for holding.th stem' tube and fusing the end of the tube, .of a pressing membermounted to. move longis tudinally of the stem tube and into engagementwith the fused end thereof, and means for movin said pressing memberlongitudinally o the tube to press the'fused end of the tube during thefusing of the tube 6, Inastem making machine, the bination with meansfor'sealing the end of the stem tube, of a pressing member mounted tomove along the leading-in wires. into engagement with theifused end ofthe tube, and means formoving said member a defi-- nite distance alongthe leading in wire while in'engag'ement'with the end of the stem tubeduring fusing 7, In a stem forming machine, the combination witha'device for holding a stem tube and fusing the end of said-tube, of-awire guide for preventing lateral movement of the stem wires,-said guidebeing mounted for movement toward the fused end of said said guidetoward the tube as the tube is fused.' i

8. In a stern forming machine, the com-:-

bination with means for holding the stem I tube and fusing the; ends ofthe'tube, ofwire gripping devices for holding the ends of the stem wiresto prevent lateral displacement of the; wires, a presser mounted betweensaid devlce and said holding means and, constructed to movelongitudinally of the tube. and into contact with' the fused end ofthetu b, and means for'iautoma'tically moving fusing bf thetube.

i I v um-377 com- 9i In astm formingmac'hine, the combination with meansfor holding a stem tube and fusing the end of the tube, of means forhoming the stemwires in position, de-' vices for preventing lateraldisplacement of guide being mounted to move longitudinally ofsaid-wires, and means for maintaining said guide in contact with the endof the h stem tube during the fusing.

11. In a stem making machine, the combination with a stem' tubesupportand means for fusing the end of'a .tubeheld in said support, of a stemwire gripping device in alinemerit with the tube and mounted to grip theends of the stem wires, a wire guide mounted between the stem and saidwire gripping device to prevent lateral displacement of the stemwiresiand to move longitudinally of the wires, and means forautomatically moving said wire guide toward-the stem a definite distanceat a-rate to keep it incontact with the stem during the fusing.

12. In a stem making nation with a rotatable stem tube support and meansfor fusing the end of the tube, of a presser mounted in alinement withthe stem tube and movable longitudinally ot the,

machine. the combistem wires, and means automatically actuv v ated bytherotation of said support for moving said presser along the stem wirestoward the tube during the fusing.

v .13. In a stem making machine, the combination with a movable carrierand a stem tube support mounted on said carrier, of a steni'wiregripping device mounted on said support in alinement with the tube heldin said support to grip the ends of stem .wires by the movement of saidcarrier for controllingisaid gripping device.

lio

placed in the stem tube, and means actuated 14. 'In a stem, makingmachine, -the combination with a movable carrier and a support for thestem tube mounted on said carrier, pf gripping jaws mounted on saidsupport 1n allnement' with the tube held in said support-to gripstemwires in the tube, and means controlled by the movement of said carrierfor opening and for closing said istem wire gripping jaws atpredetermined points in the movement of said carrier.

15. In a stem forming machine thecombination with a movable carriermeans mounted-onsaid carrier forholdmg-a stem l 5 shaping both the'endand, sides of the fused Witnesses:

tube, and means for fusing the end (if the -In witness whereof, I havehereunto set tube, of devices for preventing lateral dismy hand this 23dday of December, 1908.

lacement of the stem wires during the- I xs'mg, shaping devices forengaging and NORMA}? tube, and actuatin means for said shaping IRA L.FISH, 4 devices controlled y said carrier. Y WARRE QGDEN.

